Scale



De.27, 1932.` T ,c ARNOLD 1,892,032

SCALE Filed Feb. 14, 1929 amg Patented Dec. 27, 1932 PATENT `orticaTUNIS C. lNOLD, OFBOISE, IDAHO SCALE Application filed February 14,1929, Serial No. 335,923.

This invention relates to a device for clamping independent scalemembers together to permit their use as an adjustable unit.

More specifically, the invention contemplates a body in the form of aguide member in which the scales are positioned and clamping means forclamping the scales individually, whereby separate adjustment of samemay be attained.

@ther features of the present invention will be noted by reference tothe accompanyinO drawing forming a part of this specifica- D u u tionand wherein like characters of reference r l n' s, .f 1 0 designatecoiiesponding parts Vthi oughout the several views, in which: Fig. 1 isa side elevation; Fig. 2 is an end view;

Fig. 3 is al fragmentary perspective showing the parts in position forassembling; anld tig. 4 is a section on line 4 4 of Fig. 1.

Referring now to the drawing, reference numerals 1 and 2 indicateconventional scales which are usually constructed in one foot or i twofoot lengths or decimals thereof. Each the member 3 may best bedetermined by the type and length of the scales in connection with whichthe assembly is to be utilized.

For clamping the scales in their adjusted positions screws 6 and 7 areprovided. The screws G and 7 are threaded at one extremity and are cutaway as at 8 for a portion of their length to form seats for the scales1 and 2, and projections 8 for engaging the grooves 1 and 2. When inposition the screws 6 and 7 extend through perforations 9 and 10 formedin the base of the U-shaped body. Thumb nuts 11 are utilized for lockingthe parts together. The perforations 9 and 10 formed in the U-shapedbody are positioned at opposite sides and at opposite ends and at suchpoints that a continuation of these perforations forms grooves 12 in theinner `faces of the wall members 4 and 5 of such a depth as toaccommodate those portions of the screw Shanks remaining from formingthe seat 8.

From the foregoing it will be seen that when it is desired to use twoscales as a unit for the purpose of securing the increased length, thescrews are first positioned within the grooves 12 and with theprojections 8 turned inwardly towards the central passage between thewalls 4 and 5. The scale members 1 and 2 are then positioned. with thegrooves 1 and 2 facing outwardly and in register with the projections 8permitting the scale members to be slid between the walls i and 5. Thenthe scale members are properly positioned with the projections engagingtae groove, they may then be adjusted relatively to one another asindicated in dotted lines in Fig. 1, and secured in this adjustedposition by tightening of the thumb nut 11.

lli/That I claim as new and useful and de- F sire to secure by LettersPatent of the United States is:

1. A scale holder comprising a U-shaped body formed with staggeredperforations at its intermediate portion and slots formed in C theopposite inner wall faces merging with said perforations, hook membersextending through said perforations and seating in said slots. the outerfaces of the hook members being fiush with the inner wall faces of saidU-shaped member, scale members formed with longitudinally extendinggrooves in their outer faces and positioned between the arms of saidU-shaped member, said hook members engaging the grooves in said scalemembers, and means for clamping said hook members in fixed position.

2. A scale holder comprising a U-shaped body formed with staggeredperforations at its intermediate portion and slots in the opposite innerwall faces merging with said perforations, hook members extendingthrough said perforations and having threaded outer extremities, scalemembers formed with longitudinally extending grooves in their outerfaces carried by said U-shaped body member, said hook members engagingthe grooves in said scale members, and'thumb nuts threaded onto thethreaded extremities of the hook members.

3. An extensible scale comprising a U- shaped member formed With slotsin its opposite inner Wall faces, scale members formed withlongitudinally extending grooves in their outer faces and positionedbetween the arms of said U-shaped member, and locking means for saidscale members normally positioned in the slots in the opposite inneI`Wall faces of said U-shaped member and having inwardly extendingprojections positioned in said longitudinally extending grooves of saidscales.

' In testimony whereof I aliX my signature.

TUNis o. ARNOLD.

